BMS1062 Lecture 2: Lecture 2 _ The Structure of DNA and RNA
14 Aug 2018
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Objectives: describe the primary and secondary structure of rna and dna recognise how dna can act as a template begin to recognise the implications structure has on function, especially as it relates to dna replication and expression. D -> represents the sugar component (deoxyribose, has no o in the c2 carbon) R -> represnets the ribose (pentose sugar) stands for ribonucleic acid. N -> refers to nucleic acids, so named because they were first isolated from the nucleus of the cells. A -> refers to the phosphate groups of the sugar-phosphate backbone that are negatively charged at physiological ph and thus act as acids. Dna was first isolated by : friedrich miescher, a swiss scientist. Studied white blood cells that were abundant in pus. Nucleotides : are the polymers of nucleic acids consist of a : sugar phosphate group nitrogenous base. Pentose = 5 carbon sugar two kinds of sugar are used in nucleotides beta-d-ribose (rna) beta-d-2-deoxyribose (dna)
